Intrepid explorers have ventured into the world's most unforgiving landscapes in a relentless quest for knowledge. Biochemist Peng Jiamu braves the shifting sands of China's northern desert in search of its hidden secrets. In the 18th century, Jean-Francois Laperouse sails into the remote Pacific, determined to find the elusive Northwest Passage. Ancient Roman scholar Pliny the Elder confronts the wrath of Mount Vesuvius to harness the wisdom of the natural world.